mpeg2enc
(from GStreamer Bad Plug-ins git)High-quality MPEG-1/2 video encoder
Hierarchy
GObject ╰──GInitiallyUnowned ╰──GstObject ╰──GstElement ╰──mpeg2enc
Factory details
Authors: – Andrew Stevens
Classification: – Codec/Encoder/Video
Rank – marginal
Plugin – libgstmpeg2enc.so
Package – GStreamer Bad Plug-ins git
Pad Templates
sink
video/x-raw:
format: I420
width: [ 16, 4096 ]
height: [ 16, 4096 ]
framerate: { (fraction)24000/1001, (fraction)24/1, (fraction)25/1, (fraction)30000/1001, (fraction)30/1, (fraction)50/1, (fraction)60000/1001 }
Presence – always
Direction – sink
src
video/mpeg:
systemstream: false
mpegversion: { (int)1, (int)2 }
width: [ 16, 4096 ]
height: [ 16, 4096 ]
framerate: { (fraction)24000/1001, (fraction)24/1, (fraction)25/1, (fraction)30000/1001, (fraction)30/1, (fraction)50/1, (fraction)60000/1001 }
Presence – always
Direction – src
Properties
altscan-mpeg2
“altscan-mpeg2” gboolean
Alternate MPEG-2 block scanning. Disabling this might make buggy players play SVCD streams
Flags : Read / Write
Default value : true
b-per-refframe
“b-per-refframe” gint
Number of B frames between each I/P frame
Flags : Read / Write
Default value : 0
bufsize
“bufsize” gint
Target decoders video buffer size (kB) (default depends on format)
Flags : Read / Write
Default value : 0
closed-gop
“closed-gop” gboolean
All Group-of-Pictures are closed (for multi-angle DVDs)
Flags : Read / Write
Default value : false
constraints
“constraints” gboolean
Use strict video resolution and bitrate checks
Flags : Read / Write
Default value : true
correct-svcd-hds
“correct-svcd-hds” gboolean
Force SVCD width to 480 instead of 540/720
Flags : Read / Write
Default value : false
dualprime
“dualprime” gboolean
Dual Prime Motion Estimation Mode for MPEG-2 I/P-frame only streams. Quite some players do not support this.
Flags : Read / Write
Default value : false
dummy-svcd-sof
“dummy-svcd-sof” gboolean
Generate dummy SVCD scan-data (for vcdimager)
Flags : Read / Write
Default value : true
force-b-b-p
“force-b-b-p” gboolean
Force two B frames between I/P frames when closing GOP boundaries
Flags : Read / Write
Default value : false
framerate
“framerate” Mpeg2enc-framerate
Output framerate
Flags : Read / Write
Default value : 0 (0)
interlace-mode
“interlace-mode” Mpeg2enc-interlace-mode
MPEG-2 motion estimation and encoding modes
Flags : Read / Write
Default value : -1 (-1)
intra-dc-prec
“intra-dc-prec” gint
Number of bits precision for DC (base colour) in MPEG-2 blocks
Flags : Read / Write
Default value : 9
keep-hf
“keep-hf” gboolean
Maximize high-frequency resolution (for high-quality sources)
Flags : Read / Write
Default value : false
max-gop-size
“max-gop-size” gint
Maximal size per Group-of-Pictures (-1=default)
Flags : Read / Write
Default value : -1
min-gop-size
“min-gop-size” gint
Minimal size per Group-of-Pictures (-1=default)
Flags : Read / Write
Default value : -1
motion-search-radius
“motion-search-radius” gint
Motion compensation search radius
Flags : Read / Write
Default value : 0
non-video-bitrate
“non-video-bitrate” gint
Assumed bitrate of non-video for sequence splitting (kbps)
Flags : Read / Write
Default value : 0
norm
“norm” Mpeg2enc-video-norm
Tag output for specific video norm
Flags : Read / Write
Default value : 0 (0)
playback-field-order
“playback-field-order” Mpeg2enc-playback-field-orders
Force specific playback field order
Flags : Read / Write
Default value : 0 (-1)
pulldown-3-2
“pulldown-3-2” gboolean
Generate header flags for 3-2 pull down 24fps movies
Flags : Read / Write
Default value : false
quant-matrix
“quant-matrix” Mpeg2enc-quantisation-matrix
Quantisation matrix to use for encoding
Flags : Read / Write
Default value : 9 (0)
quant-reduction-max-var
“quant-reduction-max-var” gfloat
Maximal luma variance below which quantisation boost is used
Flags : Read / Write
Default value : 100
quantisation
“quantisation” gint
Quantisation factor (-1=cbr, 0=default, 1=best, 31=worst)
Flags : Read / Write
Default value : 0
quantisation-reduction
“quantisation-reduction” gfloat
Max. quantisation reduction for highly active blocks
Flags : Read / Write
Default value : 0
reduce-hf
“reduce-hf” gfloat
How much to reduce high-frequency resolution (by increasing quantisation)
Flags : Read / Write
Default value : 0
reduction-2x2
“reduction-2x2” gint
Reduction factor for 2x2 subsampled candidate motion estimates (1=max. quality, 4=max. speed)
Flags : Read / Write
Default value : 3
reduction-4x4
“reduction-4x4” gint
Reduction factor for 4x4 subsampled candidate motion estimates (1=max. quality, 4=max. speed)
Flags : Read / Write
Default value : 2
sequence-header-every-gop
“sequence-header-every-gop” gboolean
Include a sequence header in every GOP
Flags : Read / Write
Default value : false
sequence-length
“sequence-length” gint
Place a sequence boundary after each
Flags : Read / Write
Default value : 0
unit-coeff-elim
“unit-coeff-elim” gint
How agressively small-unit picture blocks should be skipped
Flags : Read / Write
Default value : 0
vcd-still-size
“vcd-still-size” gint
Size of VCD stills (in KB)
Flags : Read / Write
Default value : 0
Named constants
Mpeg2enc-aspect
Members
0 (0) – Deduce from input
1 (1) – 1:1
2 (2) – 4:3
3 (3) – 16:9
4 (4) – 2.21:1
Mpeg2enc-format
Members
0 (0) – Generic MPEG-1
1 (1) – Standard VCD
2 (2) – User VCD
3 (3) – Generic MPEG-2
4 (4) – Standard SVCD
5 (5) – User SVCD
6 (6) – VCD Stills sequences
7 (7) – SVCD Stills sequences
8 (8) – DVD MPEG-2 for dvdauthor
9 (9) – DVD MPEG-2
10 (10) – ATSC 480i
11 (11) – ATSC 480p
12 (12) – ATSC 720p
13 (13) – ATSC 1080i
Mpeg2enc-framerate
Members
0 (0) – Same as input
1 (1) – 24/1.001 (NTSC 3:2 pulldown converted film)
2 (2) – 24 (native film)
3 (3) – 25 (PAL/SECAM video)
4 (4) – 30/1.001 (NTSC video)
5 (5) – 30
6 (6) – 50 (PAL/SECAM fields)
7 (7) – 60/1.001 (NTSC fields)
8 (8) – 60
Mpeg2enc-interlace-mode
Members
-1 (-1) – Format default mode
0 (0) – Progressive
1 (1) – Interlaced, per-frame encoding
2 (2) – Interlaced, per-field-encoding
Mpeg2enc-playback-field-orders
Members
0 (-1) – Unspecified
1 (1) – Top-field first
2 (2) – Bottom-field first
Mpeg2enc-quantisation-matrix
Members
9 (0) – Default
1 (1) – High resolution
2 (2) – KVCD
3 (3) – TMPGEnc
Mpeg2enc-video-norm
Members
0 (0) – Unspecified
p (112) – PAL
n (110) – NTSC
s (115) – SECAM
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